Answers

Add 63/21 and 54/30

1^st number: 3 0/21, 2^nd number: 1 24/30

63/21 + 54/30 is 24/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 30 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 21 × 10 = 210,
   63/21 = 63 × 10/21 × 10 = 630/210
3. Likewise, for the 2nd fraction, since 30 × 7 = 210,
   54/30 = 54 × 7/30 × 7 = 378/210
4. Add the two like fractions:
   630/210 + 378/210 = 630 + 378/210 = 1008/210
5. 1008/210 simplified gives 24/5
6. So, 63/21 + 54/30 = 24/5
   In mixed form: 44/5

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ⁶³/₄₂+⁵⁴/₃₀ ⁶³/₂₁+⁵⁴/₆₀ ⁶³/₂₁+⁵⁴/₉₀

Add Fractions Calculator